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Add jemalloc and jemalloc-auto features

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Introduce the new features jemalloc (set jemalloc global allocator
unconditionally) and jemalloc-auto (set jemalloc global allocator on
musl-based targets to fix multithreaded performance, see [1]).

Because cargo does not support target-specific features or feature
defaults, the default is handled using a helper crate
minedmap-default-alloc.

[1] https://nickb.dev/blog/default-musl-allocator-considered-harmful-to-performance/
This commit is contained in:
Matthias Schiffer 2025-02-12 20:22:26 +01:00
parent a25b3cdbd7
commit 1d9be9a41c
Signed by: neocturne
GPG key ID: 16EF3F64CB201D9C
6 changed files with 77 additions and 1 deletions
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5
Cargo.toml
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@ -47,6 +47,7 @@ git-version = "0.3.5"
image = { version = "0.25.1", default-features = false, features = ["png", "webp"] }
indexmap = { version = "2.0.0", features = ["serde"] }
lru = "0.13.0"
minedmap-default-alloc = { version = "0.1.0", path = "crates/default-alloc", optional = true }
minedmap-nbt = { version = "0.1.1", path = "crates/nbt", default-features = false }
minedmap-resource = { version = "0.6.0", path = "crates/resource" }
minedmap-types = { version = "0.1.4", path = "crates/types" }
@ -64,5 +65,7 @@ tracing-subscriber = "0.3.17"
zstd = "0.13.0"
[features]
default = ["zlib-ng"]
default = ["jemalloc-auto", "zlib-ng"]
jemalloc-auto = ["dep:minedmap-default-alloc"]
jemalloc = ["jemalloc-auto", "minedmap-default-alloc/jemalloc"]
zlib-ng = ["minedmap-nbt/zlib-ng"]